My Fiancé Wants to Move

So my fiancé wants to move to another state and I want to stay put. This has caused numerous fights and arguments between us.  He doesn't have a job lined up or anything.  He just wants to be down South. Right now I'm pregnant and I don't want to leave my job and it's a really good job too. I just got promoted to a higher position and additional salary.  I feel like he his living a childhood fantasy and feels like by moving South all of these opportunities are going to open up.  I honestly don't want to move especially considering my family is close by to where we live now.  His family is not close by to where he wants to live.  I don't know what to do. He's talking about leaving in June and I'm due in August. I told him that he won't be here for the birth of our child and he is turning me into a single parent. I started crying to him about this.  My life is crazy right now and I can't deal with this.  Has anyone faced something similar? What should I do?